


Modifying Text Elements with jQuery: Find and Embolden
In jQuery, it's common to manipulate DOM elements dynamically. One such task involves finding specific text within a given element and modifying its appearance, such as bolding it.
Consider the following code:
$(window).load(function() { // ADD BOLD ELEMENTS $('#about_theresidency:contains("cross genre")').css({'font-weight':'bold'}); });
In this example, we're trying to find the text "cross genre" within the element with ID "about_theresidency" and apply CSS to make it bold. However, this approach may not yield the desired result. To understand why, let's explore an alternative solution:
var html = $('p').html(); $('p').html(html.replace(/world/gi, '<strong>$&</strong>'));
This approach uses the replace() method to identify and replace the text "world" with bold HTML tags. It's a more reliable way to find and modify specific text because:
- It targets the entire HTML content of the element, not just its direct text nodes.
- It uses a regular expression (/world/gi) to perform case-insensitive search and global replacement.
You can also create a reusable plugin to handle this functionality:
$.fn.wrapInTag = function(opts) { var tag = opts.tag || 'strong' , words = opts.words || [] , regex = RegExp(words.join('|'), 'gi') // Case insensitive , replacement = '$&'+ tag +'>'; return this.html(function() { return $(this).text().replace(regex, replacement); }); };
Usage:
$('p').wrapInTag({ tag: 'em', words: ['world', 'red'] });
This plugin allows you to easily wrap specific words within the given element with any HTML tag.
The above is the detailed content of How Can I Reliably Find and Bold Specific Text Within a jQuery Element?. For more information, please follow other related articles on the PHP Chinese website!

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